I don't know if you can see the references in this outfit, but I feel it looks a little 1920s. The key elements of a 1920s look is drop waists, beading, sultry colors, layers of jewelry, and cant forget head pieces.
The flapper dress is very flattering on a variety of body types and with most having a mid length they can be worn multiple ways and can be used for a variety of occasions.
Jewelry: lock pendant, (Similar Here)
Monogram necklace, (Get Here)
Layered Chain, (Similar Here)